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9#include "qemu/osdep.h"
10#include "qemu/bitops.h"
11
12typedef struct {
13 uint32_t value;
14 int start;
15 int length;
16 int32_t result;
17} S32Test;
18
19typedef struct {
20 uint64_t value;
21 int start;
22 int length;
23 int64_t result;
24} S64Test;
25
26static const S32Test test_s32_data[] = {
27 { 0x38463983, 4, 4, -8 },
28 { 0x38463983, 12, 8, 0x63 },
29 { 0x38463983, 0, 32, 0x38463983 },
30};
31
32static const S64Test test_s64_data[] = {
33 { 0x8459826734967223ULL, 60, 4, -8 },
34 { 0x8459826734967223ULL, 0, 64, 0x8459826734967223LL },
35};
36
37static void test_sextract32(void)
38{
39 int i;
40
41 for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) {
42 const S32Test *test = &test_s32_data[i];
43 int32_t r = sextract32(test->value, test->start, test->length);
44
45 g_assert_cmpint(r, ==, test->result);
46 }
47}
48
49static void test_sextract64(void)
50{
51 int i;
52
53 for (i = 0; i < ARRAY_SIZE(test_s32_data); i++) {
54 const S32Test *test = &test_s32_data[i];
55 int64_t r = sextract64(test->value, test->start, test->length);
56
57 g_assert_cmpint(r, ==, test->result);
58 }
59
60 for (i = 0; i < ARRAY_SIZE(test_s64_data); i++) {
61 const S64Test *test = &test_s64_data[i];
62 int64_t r = sextract64(test->value, test->start, test->length);
63
64 g_assert_cmpint(r, ==, test->result);
65 }
66}
67
68typedef struct {
69 uint32_t unshuffled;
70 uint32_t shuffled;
71} Shuffle32Test;
72
73typedef struct {
74 uint64_t unshuffled;
75 uint64_t shuffled;
76} Shuffle64Test;
77
78static const Shuffle32Test test_shuffle32_data[] = {
79 { 0x0000FFFF, 0x55555555 },
80 { 0x000081C5, 0x40015011 },
81};
82
83static const Shuffle64Test test_shuffle64_data[] = {
84 { 0x00000000FFFFFFFFULL, 0x5555555555555555ULL },
85 { 0x00000000493AB02CULL, 0x1041054445000450ULL },
86};
87
88static void test_half_shuffle32(void)
89{
90 int i;
91
92 for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
93 const Shuffle32Test *test = &test_shuffle32_data[i];
94 uint32_t r = half_shuffle32(test->unshuffled);
95
96 g_assert_cmpint(r, ==, test->shuffled);
97 }
98}
99
100static void test_half_shuffle64(void)
101{
102 int i;
103
104 for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
105 const Shuffle64Test *test = &test_shuffle64_data[i];
106 uint64_t r = half_shuffle64(test->unshuffled);
107
108 g_assert_cmpint(r, ==, test->shuffled);
109 }
110}
111
112static void test_half_unshuffle32(void)
113{
114 int i;
115
116 for (i = 0; i < ARRAY_SIZE(test_shuffle32_data); i++) {
117 const Shuffle32Test *test = &test_shuffle32_data[i];
118 uint32_t r = half_unshuffle32(test->shuffled);
119
120 g_assert_cmpint(r, ==, test->unshuffled);
121 }
122}
123
124static void test_half_unshuffle64(void)
125{
126 int i;
127
128 for (i = 0; i < ARRAY_SIZE(test_shuffle64_data); i++) {
129 const Shuffle64Test *test = &test_shuffle64_data[i];
130 uint64_t r = half_unshuffle64(test->shuffled);
131
132 g_assert_cmpint(r, ==, test->unshuffled);
133 }
134}
135
136int main(int argc, char **argv)
137{
138 g_test_init(&argc, &argv, NULL);
139 g_test_add_func("/bitops/sextract32", test_sextract32);
140 g_test_add_func("/bitops/sextract64", test_sextract64);
141 g_test_add_func("/bitops/half_shuffle32", test_half_shuffle32);
142 g_test_add_func("/bitops/half_shuffle64", test_half_shuffle64);
143 g_test_add_func("/bitops/half_unshuffle32", test_half_unshuffle32);
144 g_test_add_func("/bitops/half_unshuffle64", test_half_unshuffle64);
145 return g_test_run();
146}
147
